Door operator



June 4, 1935.

A. J. KINSLER ET AL DOOR OPERATOR Filed Aug. 16, 1935 2 Sheets-Sheet l 25612 JIZfi'nsZez Ljajzepk av -rrons ATTORN EY WITNESS:

June 4, 1935.

J. KINSLER ET AL noon OPERATOR Filed Aug. 16, 1933 2 Sheets-Sheet 2 lllll l fililli Josepk ATTOR N EY WITNESS:

Patented June 4, 1935 DOOR OPERATOR Albert J. Kinsler and Joseph Kinsler,

Pittsburgh, Pa.

Application August 16, 1933, Serial No. 685,462

1 Claim.

This invention relates to doors of the swinging type and has for the primary object the provision of a mounting for doors arranged in pairs wherein one door is compelled to swing in one direction and the other door to swing in an opposite direction for opening and closing the doorway and equipped with means for closing the doors when released from an open position and to check and cushion the movement of the doors into a closed position.

Another object of this invention is the provision of means under convenient manual control whereby the doors may be held in an open position and released from the stated position when desired.

With these and other objects in view this invention consists in certain novel features of construction, combination and arrangement of parts to be hereinafter more fully described and claimed.

For a complete understanding of our invention,

reference is to be had to the following description and accompanying drawings, in which Figure l is a fragmentary vertical sectional View illustrating the door frame carrying swinging doors equipped with our invention.

Figure 2 is a plan view, partly in section, illustrating the same. 7

Figure 3 is a similar View showing the doors in an open position.

Figure 4 is a fragmentary transverse sectional view illustrating the check for the doors.

Figure 5 is a detail sectional view showing the parts of the check.

Figure 6 is a detail view showing a finger piece of the locking mechanism for retaining the doors in open position.

Figure '7 is a fragmentary sectional view showing the locking mechanism positioned to hold the doors in an open position.

Referring in detail to the drawings, the numeral I indicates a door frame having doors 2 hinged thereto. The upper portion of the frame I may be of channeled or hollow formation to accommodate our invention or our invention may be applied to the door frame exteriorly of the latter. In this instance, the upper portion of the door frame is provided with arcuate shaped slots 3 which extend in opposite directions, as shown in Figure 2, and have extending therethrough pins 4 secured to the doors. Pivoted in the upper portion of the frame I is a lever 5 having oppositely arranged and angularly related ends 6 to which are pivoted links I. The free ends of the links have the pins 4 journaled thereto. The doorsconnected in the manner described are compelled when opened manually to swing in opposite directions. Connected to the lever 5 adjacent one end is a coil spring 8. The other end of the spring is secured to the frame I. When the doors are 5 opened, the spring 3 is placed under tension so that when the doors are released the spring urges the doors to a closed position. Doors connected in the manner described will maintain a closed position against drafts or pressure from wind. 10 The doors swing into an open position in opposite directions with respect to one another so that it a force acting upon one side of both doors, said force will be unable to open the doors due to the fact that the door which cannot swing in the direction in which the force is acting prevents the other door from opening.

A check 9 is mounted in the frame I and consists of a casing III having a cylinder II therein, in which is slidably mounted a piston I2 carrying a check valve I3. The stem I 4 of the piston has formed integrally therewith a head I5 adapted to slide in the cylinder. A portion of the casing is cut away, as shown at I6, and communicates with the cylinder to expose a portion of the head I5. A bell crank lever I1 is pivotally mounted in the cutaway portion I6 of the casing and one end of said lever is connected to the head I5 by a pin and slot connection while the opposite end of the lever H has a universal connection with a link I8. The opposite end of the link is correspondingly connected to an ear I9 on the lever 5 adjacent to the latters pivot. Formed in the casing I II is a passage 20 communicating with the cylinder at opposite sides of the piston I2. Fluid is placed in the cylinder II and travels from one side of the piston to the other side by way of the passage 20 and the flow of the fluid through the latter may be controlled by a valve ZI. The head I5 on the stem I4 forms a closure for the cylinder regardless of the position of the piston. The doors when moved to an open position cause the piston I2 to move outwardly with respect to the cylinder II, the liquid passing the piston by way of the check valve I3. The doors when released from an open position are urged towards a closed position by the spring 8 and this movement is retarded by the piston I2 acting against the fluid in the cylinder. To permit inward movement of the piston with respect to the cylinder, the fluid is forced through the passage 20 and its flow is regulated by the valve 2|, consequently the piston and fluid acting to permit the doors to' gradually assume a closed position.

The doors connected in a manner described and equipped with a check 5 will close by the action of the spring at a constant speed and will be non-affected by drafts or pressure of air currents acting in opposition to the closing of the doors.

A guide 22 is carried by the casing ID for the lever H. A shaft 23 is journaled in the frame I above the lever 5 and carries at its ends finger pieces 24 disposed exteriorly of the upper portion of the door frame. A pin 25 is carried by the shaft 23 and by rotating the shaft through one of the finger pieces 24, the pin may be positioned to engage the lever 5 and hold the doors in an open position, as shown in Figure 3.

While we have shown and described the preferred embodiment of our invention, it will be understood that minor changes in construction, combination and arrangement of parts may be made Without departing from the spirit and scope of our invention, as claimed.

Having described the invention, we claim:

A double door operating device comprising a main lever pivotally mounted intermediate its ends and having the ends thereof angularly disposed and bifurcated and extending in opposite directions to each other, links pivotally connected to the bifurcated ends of the levers and to swinging doors, spring means urging the lever in one direction for closing the doors, a rotatable member traversing the lever, and a pin carried by said member to be moved by the latter to engage the lever at one of its angularly related ends to hold said lever against pivotal movement by the influence of said spring means for retaining the doors in an open position.

ALBERT J. KINSLER. JOSEPH KINSLER. 

